Hello All.
Question: Do you think the larger cab on a medium duty ambulance will give better aero than a light duty ambulance?
Below is Freightliner M2 106 next to a Ram 4500 with the same size box. I know box trucks and Class C RVs have horrible aerodynamic due to the large flat profile on the front of the box. The MD ambulances have much less of the box exposed and I'm thinking that might be why I'm seeing similar mileage claims for medium duty ambulances as for light duty ones.
The back-story:
As some may know my wife and I are looking to travel full time in about 2 years. Our current campervan is too small and we are looking for something bigger. At first I was looking at high roof Transits or a box truck.
Then I got turned on to ambulances which are basically a box truck with a MUCH better built box on them. All aluminum construction with lots of lockable storage already built in. The only down side is most are van based and after 2 decades of helping my father wrench on Econoline vans I have no desire to own a Type III ambulance built on a cutaway van chassis.
There are Type I ambulances built on truck chassis. Those have some benefits like easy suspension upgrades and more room to work under the hood. (Although if a turbo goes out the cab has to come off!) The big downside is that Type I trucks built on a F250 - F450 chassis rarely have a walk-through to the cab. That is a must have for us
Then I starting thinking about Medium Duty Ambulances. At first I though they would be WAY to big but the box is the same size. The major difference is the size of the cab....